Journal
OPTICS LETTERS
Volume 38, Issue 19, Pages 3918-3921Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.38.003918
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Funding
- EPSRC [EP/I032517/1, EP/F034601/1]
- Laserlab Europe [LOA001657]
- EPSRC [EP/F034601/1, EP/I032517/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/I032517/1, 1227496, EP/F034601/1] Funding Source: researchfish
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We investigated the carrier-envelope phase (CEP) stability of hollow-fiber compression for high-energy few-cycle pulse generation. Saturation of the output pulse energy is observed at 0.6 mJ for a 260 mu m inner-diameter, 1 m long fiber, statically filled with neon. The pressure is adjusted to achieve output spectra supporting sub-4-fs pulses. The maximum output pulse energy can be increased to 0.8 mJ by either differential pumping (DP) or circularly polarized input pulses. We observe the onset of an ionization-induced CEP instability, which saturates beyond input pulse energies of 1.25 mJ. There is no significant difference in the CEP stability with DP compared to static-fill. (C) 2013 Optical Society of America
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